STURDY FRAME - Durable Hi-Ten steel frame and fork provide awesome impact resistance when riding over rocky and bumpy terrain. The frame and fork are guaranteed by our LIFETIME WARRANTY. DESIGN FOR KIDS - The kids bike comes with coaster brake, simply pushing the pedal backwards to stop the bike. It's also equipped with training wheels, a great support for toddlers to improve balance while riding a bike. 16' & 18' kids bicycle is also equipped with hand brake. CHOOSE THE RIGHT SIZE - 14 inch for 3 - 5 years (height 36' - 47'); 16 inch for 4 - 7 years (height 41' - 53'); 18 inch for 5 - 9 years (height 43' - 59'). MINIMUM MAINTENANCE - Environmental friendly raw materials bring kids a healthy ride. Full chain guard well protects the chain getting rusty. EASY TO ASSEMBLE - The bicycle comes with 85% assembled and the basic assembly tools in the box. Normally it takes 20 minutes for a fresh hand to install the bike. Adult assembly is required.